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- Title
Preparation and gas sensing properties of NaBi(MoO<sub>4</sub>)<sub>2</sub> mesoporous material and its Co<sub>3</sub>O<sub>4</sub> doped composites.
- Authors
Li, Xinru; Lin, Zhidong; Liu, Liming; Zhang, Xiaowen
- Abstract
NaBi(MoO4)2 mesoporous material was prepared by a simple solvothermal method. Co3O4 and CuO doped NaBi(MoO4)2 composites were prepared by sintering NaBi(MoO4)2 nanoparticles covered with the corresponding nitrate. The NaBi(MoO4)2 and the composites were characterized by XRD, SEM, TEM and nitrogen adsorption–desorption analysis. The results show that NaBi(MoO4)2 was mesoporous structures assembled by random aggregation of nanoparticles with an average grain size of about 31 nm. In the composite, the Co3O4 was obtained and uniformly distributed on the surfaces of NaBi(MoO4)2 nanoparticles to form heterojunctions. The sensor based on pure NaBi(MoO4)2 mesoporous material showed a response value of up to 44.8 for 100 ppm n-butanol at an optimum operating temperature of 260 °C with a fast response and recovery time. The Co3O4-doped NaBi(MoO4)2 composite exhibited superior gas-sensitive properties over the pure NaBi(MoO4)2 mesoporous material. The sensor based on 1.0 wt% Co3O4-doped NaBi(MoO4)2 showed a response value of 63 for 100 ppm n-butanol at 260 °C.
- Subjects
MESOPOROUS materials; NITROGEN analysis; X-ray diffraction; GRAIN size; HETEROJUNCTIONS; COPPER oxide
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 27, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-11248-2